Ventilation device



FIG. 1 is a front and top perspective view of a first embodiment of a ventilation device, showing my new design;

FIG. 2 is a rear and bottom perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof,

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is an enlarged view of a portion indicated with numeric 9 in FIG. 1;

FIG. 10 is an enlarged view of a portion indicated with numeric 10 in FIG. 5;

FIG. 11 is a front and top perspective view of a second embodiment of the ventilation device;

FIG. 12 is a rear and bottom perspective view thereof;

FIG. 13 is a front elevation view thereof;

FIG. 14 is a rear elevation view thereof;

FIG. 15 is a left side elevation view thereof;

FIG. 16 is a right side elevation view thereof;

FIG. 17 is a top plan view thereof;

FIG. 18 is a bottom plan view thereof;

FIG. 19 is an enlarged view of a portion indicated with numeric 19 in FIG. 11; and,

FIG. 20 is an enlarged view of a portion indicated with numeric 20 in FIG. 15.

The broken lines, in the figures illustrate portions of the ventilation device that form no part of the claimed design. The dash dot dash lines in FIGS. 1, 5, 9, 10, 11, 15, 19 and 20 are for the purpose of depicting the boundary lines of the enlarged views and form no part of the claimed design. 

CLAIM The ornamental design for a ventilation device, as shown and described. 